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https://issues.apache.org/jira/browse/HIVE-1830?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Liyin Tang updated HIVE-1830:
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Attachment: hive-1830-3.patch
Carefully measure the memory usage of map side group by.
Flush frequently, if the left memory is less than a threshold.
> mappers in group followed by joins may die OOM
> ----------------------------------------------
>
> Key: HIVE-1830
> URL: https://issues.apache.org/jira/browse/HIVE-1830
> Project: Hive
> Issue Type: Bug
> Reporter: Namit Jain
> Assignee: Liyin Tang
> Attachments: hive-1830-1.patch, hive-1830-2.patch, hive-1830-3.patch
>
>
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